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ortant to learn English well. 學(xué)好英語(yǔ)很重要。 Complete the sentences with the phrases in the box. 4a be supposed to be expected to be important to 1. When you go aboard, it _____________ bring your passport. 2. After class, students ______________ clean the chalk off the blackboard. 3. If you visit the northern coast of Norway during the winter season, it _____________ pack warm clothes. is important to are supposed to is important to n. 護(hù)照 clean off 把 …… 擦掉 adj. 北方的 。 北部的 n. 海岸 。 海濱 n. 季節(jié) n. 黑板 n. 粉筆 4. If there are people in the meeting room, you ______________ knock before entering. 5. In many eastern European countries, you ______________ take off your gloves before shaking hands. are expected to are supposed to v. 敲 。 擊 n. 敲擊聲 。 敲擊 take off 脫下 (衣服 )。 (飛機(jī)等 )起飛 adj. 東方的 。 東部的 Fill in the blanks with the correct forms of the words in brackets. 4b Each country has different rules about so